Accession Number : AD0882470

Title :   Drag of Several Surface Protrusion Patterns at M = 5.0,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Darling, John A.

Report Date : 30 DEC 1970

Pagination or Media Count : 45

Abstract : Axial forces were measured on five cylinders at M = 5 for Re = 4,000,000/ft and 37,000,000/ft. The purpose of these tests was to measure the surface drag of the cylinders for various surface protrusion patterns. Using these experimental measurements and data from J. C. Westkaemper, an expression was developed for calculating the average effective drag coefficient of one protrusion in a row of protrusions which are fully submerged in a turbulent boundary layer. (Author)

Descriptors :   *CYLINDRICAL BODIES, *DRAG, HYPERSONIC CHARACTERISTICS, SURFACE ROUGHNESS, REYNOLDS NUMBER, TURBULENT BOUNDARY LAYER.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE